21441584

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:489

約数の個数: 40

約数和(自身を含む): 43330560

約数和(自身を除く): 21888976

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 139, 248, 278, 311, 496, 556, 622, 1112, 1244, 2224, 2488, 4309, 4976, 8618, 9641, 17236, 19282, 34472, 38564, 43229, 68944, 77128, 86458, 154256, 172916, 345832, 691664, 1340099, 2680198, 5360396, 10720792, 21441584]

約数ペア:

[(1, 21441584), (2, 10720792), (4, 5360396), (8, 2680198), (16, 1340099), (31, 691664), (62, 345832), (124, 172916), (139, 154256), (248, 86458), (278, 77128), (311, 68944), (496, 43229), (556, 38564), (622, 34472), (1112, 19282), (1244, 17236), (2224, 9641), (2488, 8618), (4309, 4976)]